21424+4105 KUI 108 AB

 
 
21h 42m 22.94s +41° 04' 37.3" P.A. 14.00 sep 0.2 mag 6.33,6.72 Sp A0V dist. 126.42 pc (412.38 l.y.)
 
 
Coord 2000 21424+4105 Discov num KUI 108 Comp AB Coord arcsec 2000 21 42 22.94 +41 04 37.3
Date first 1937 Date last 2014 Obs 143
Pa first 4 Pa last 13.6 P.A. Now (θ) 302.7°
Sep first 0.2 Sep last 0.203 Sep. Now (ρ) 0.119"
Mag pri 6.33 Mag sec 6.72 delta mag (ΔM) 0.39 Spectral class A0V (white)
Pri motion ra +031 Sec motion ra
Pri motion dec -005 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
21424+4105 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 51207 21 42 23 +41 04 37 KUI 108 AB 2014 143 14 0.2 6.33 6.72 0.39 Y <===
Show HD 206644 51207 21 42 23 +41 04 37 ARY 129 AB,C 2017 1 132 145.5 6.30 7.80 1.50
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 51207 HIP 107162 Tycho2 3188-01949-1
HD 206644 HR 8300 GC 30394 BD BD+40 4615
Flamsteed 77 Cygni Flamsteed name 77 Cyg Distance 126.42 Distance ly 412.38
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier21424+4105 KUI 108
coord_arcsec_2000214222.94+410437.3
Period (P)26.49y Periastron (T)1974.72y Semi-major axis (a)0.153a
Eccentricity (e)0.333 Inclination (i)142.4° Longitude of periastron (ω)176.1°
Node (Ω)12.3° Notesn ReferenceHrt2000c
Equinox2000 Last observation1997 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 223.8 0.099
2001 200.2 0.102
2002 177.4 0.102
2003 154.3 0.101
2004 130.8 0.101
2005 108.8 0.107
2006 89.9 0.118
2007 74.6 0.132
2008 62.4 0.147
2009 52.3 0.161
2010 43.9 0.174
2011 36.6 0.185
2012 30.0 0.194
2013 23.8 0.200
2014 18.0 0.203
2015 12.3 0.204
2016 6.5 0.201
2017 0.5 0.196
2018 354.1 0.188
2019 347.0 0.178
2020 338.9 0.165
2021 329.4 0.150
2022 317.6 0.134
2023 302.7 0.119
2024 283.7 0.106
2025 260.8 0.099
2026 235.9 0.098
2027 211.6 0.100
2028 188.6 0.102
2029 165.7 0.101
2030 142.3 0.101


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.



 
 


wds21424%2B4105a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic